![]() ![]() Occasionally, more than one CD will have the same layout. ![]() Sound Juicer uses the CD's serial number and the positions and lengths of the tracks to match against CDs in the MusicBrainz database. MusicBrainz is a free service that provides a database of data for most published CDs. And somehow when I let RhythmBox play all these files in shuffle mode (or even entire albums sequentially), there are loud clicks/pops when changing between files generated from Audacity vs SoundJuicer.When you insert an audio CD, Sound Juicer will automatically retrieve the track data from MusicBrainz. So, it seems to me that SoundJuicer produces FLAC files that are somehow different from the FLAC files produced by Audacity. ![]() But no clicks/pops between FLAC files from different CDs, all ripped by SoundJuicer. I get the loud clicks/pops in RhythmBox when there is a transition from a file (MP3 or FLAC) that was created in Audacity, to a file ripped from CD by SoundJuicer (or vice versa). After exporting the individual songs to FLAC, I can play the FLAC files in RhythmBox with no clicks or pops between FLAC files from the same LP. Note that I don’t get any loud clicks/pops when playing the entire project in Audacity. Thus the normalization would be after removing egregious clicks and noise that might otherwise have high amplitudes (digital clipping) and would throw off the normalization. I got the idea from the Audacity manual to use the Normalize tool near the end of the overall process. I’m not mixing tracks from separate recordings. I’m only recording one LP per Audacity project. I’m not certain I see how your point is relevant to my situation. The songs have to be DC-Free before you combine them. Could that be my problem? I will have to experiment…) I then apply labels to the individual songs within the project, and Export Multiple to FLAC.Įffect > Normalize (Remove DC) has to be used before you mix and edit. (I leave the “process stereo channels separately” box unchecked, since I didn’t like what happened to the left/right stereo balance with the checkbox turned on. Once I’m finally satisfied, I select the entire project (Ctrl-A) and run the Normalize tool. I use a combination of different techniques depending on the size and severity of the noise: sometimes the Repair tool, sometimes Amplify with about -20 dB, and sometimes deleting a single AC cycle of music (matching up corresponding zero-crossings of the music waveform). I then listen to the audio and manually fix any remaining clicks/pops/noise that I find sufficiently objectionable. I then select the entire project (Ctrl-A) and use the Click Removal tool. I then delete any unwanted portions of the recording (stylus up/down, long lead-in and lead-out, etc.). The way I’ve been using Audacity is to record one project per vinyl album, pressing the pause button after the first side of the LP, then releasing the pause mode after flipping the LP. I restart PulseAudio and use RhythmBox to listen to all my FLAC files. After I’m done recording, I exit Audacity. all work down in the nitty-gritty details.Īnother datapoint: Before recording with Audacity, I shut down PulseAudio, since it drops samples. I have broad general knowledge of A/D conversion, audio sampling, FLAC, etc., but I lack detailed knowledge of how Audacity, Sound Juicer, RhythmBox, Linux sound drivers, etc. I have a degree in ECE, and I write embedded software for a living. My guess is that it involves DC levels or something. It seems to me that there is something different between the files created by Audacity and the files created by Sound Juicer. My PC has an Intel Core i7-3770, 16 GB of RAM, and a mostly-empty 1TB SATA hard drive (spinning magnetic). My audio interface hardware is a Focusrite Scarlett 2i2. I did use Audacity’s “Normalize” feature to remove the DC level from my LP recordings. But as soon as there is a transition between a file created by Sound Juicer and a file created by Audacity (or vice versa), there is a horribly loud pop. If I play all the Audacity-created songs (in order) from a given LP, it sounds fine no loud pops between the Audacity songs. If I jump around between different FLAC files created from different CDs using Sound Juicer, there is no noise between songs. When I play these various files back in RhythmBox, there is a nasty pop when transitioning to/from files that were created by Audacity. I have also used Audacity to record several vinyl LPs to FLAC. I have ripped several CDs to FLAC using Sound Juicer. I’m running Fedora 33 with the Fedora versions of Audacity, Sound Juicer, and RhythmBox. My question involves low-level technical details, so that’s why I decided to ask here. I welcome any assistance in finding a better forum. My apologies if this isn’t the best place to ask this. ![]()
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